Two guaianolides from cichorium pumilum |
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| Authors: | Sawsan El-Masry Nabila M Ghazy Christa Zdero Ferdinand Bohlmann |
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| Institution: | 1. Institute for Organic Chemistry, Technical University of Berlin, D-1000 Berlin 12, West Germany |
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| Abstract: | The roots of Cichorium pumilum afforded two new guaianolides, 10β-hydroxyguaia-4,13-dien-6,12-olide and the corresponding 11β,13-dihydro derivative which could be separated only after transforming the methylene lactone into the corresponding pyrazoline. The structures were elucidated by 400 MHz 1H NMR spectroscopy. The chemotaxonomic situation is discussed briefly. |
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| Keywords: | Compositae sesquiterpene lactones guaianolides |
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